If you've seen one you've seen Amal...

A woman has twins, and gives them up for adoption. One of them goes to a family in Egypt and is
named "Amal." The other goes to a family in Spain; they name him
"Juan." Years later, Juan sends a picture of himself to his mom. Upon
receiving the picture, she tells her husband that she wishes she also
had a picture of Amal. Her husband responds, "But they are twins--if
you've seen Juan, you've seen Amal."